The smallest Datejust, at 28mm, in gold and gem-set configurations. The mechanism is the same argument the line has always made — a self-winding chronometer with a date — compressed into a case where every component had to be redrawn rather than scaled. Calibre 2236 with the Syloxi hairspring. Water resistant to 100m. What matters on examination: bracelet stretch, which a small-link bracelet shows earlier than a larger one and which is the usual limit on a watch of this age; stone security in the setting, since smaller stones in a smaller case have less metal holding them; case sharpness; and that the papers record the stone specification. Confirmed through the desk. Maker: Rolex. Reference: 279458RBR-0001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.